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UMass Amherst KIN 470 - Kin 470 lab 4 notes from video

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Kin 470 lab 4 notes from video- Blood pressure and acute response- Blood pressure- Goes up an down depending on ventricular contraction- Every time you contact it goes up, then slowly declineo Goes up – systolic Typical is 120o Rest – diastolico Pressure is in mmHg- Calculation in labo Pulse pressure Subtract diastolic from systolic bp 120-80 = 40o mean arterial pressure PP/3 + diastolic (at rest) PP/2 + DBP (exercise)- BP measuremento Blood pressure cuffo Increase cuff pressure up to above systolic blood pressure – 160 mmHgo No blood flowing througho Release valveo Systolic pressure Equal to cuff pressureo 1st korotkoff sound around 120 mmHgo continue to hear sounds until 2nd Korotkoff sound 120 80 blood pressure greatly passes cuff pressure, can freely flow through beats you hear, during systole blood gets through, diastole nothing gets through should sound like an echo end of diastole – won’t hear any of the sounds- orthostatic hypotensiono drop in blood pressure when going from lying down to standing upo blood pooling when u are lying downo quickly standing up  not a lot of blood near hearto less pressure insideo blood pressure will dropo quickly goes away in a few secondso some people black out when standing up quickly- BP and exerciseo SBP is expected to increase linearly with work rate 10-15 mmHg for each 50W increase in cycle powero DBP changes very littleo Returns to the pre-exercise level within 5-8 minutes after the cessation of moderate exerciseo BP returns to normal within a few minutes – depends on intensity More intense will take longer- BP and the cold pressor testo In cold environments, BP increases Increase in norepinephrine Venoconstrictiono To stimulate a cold environment, the Cold Pressor Test is used Submerge hand in ice water for 2 minutes Measure blood pressure after the 2 minutes- Lab activityo Create groups of 4 & pick 2 participantso Use the BioPac system Open L16: blood pressure labo Make sure you calibrate the system correctly Will save time and effort- Protocolo Participant 1: 2 seatedo Participant 2: 2 seatedo Participant 1: 2 supineo Break: analyze current data, make sure it looks normalo Participant 2: supine- Nexto Particpant 1: cold pressor test 3 measurements (0,5 10)o participant 2: exercise and CPT 2 measurements- after 5 mins of cycling- then 2 minutes of CPTo short lab report – results and discussion- notes from lab:o sitting, lying down, exercise, hand in bucket of iceo lying down  sitting blood will pool cardiac output will decreaseo hand in ice increase in bp vasoconstriction where hand is cold and highero exercise systolic increases increased cardiac output SV increased Time in systole decreased Decrease harder and fastero Exercise with hand in cold – blood pressure


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